Reliable MPPT Solar Charge Controller — efficient battery charging, built for indoor systems Why this controller matters Maximizes solar harvest: 100% MPPT (Maximum Power Point Tracking) delivers higher charging efficiency than PWM controllers and adapts to changing sunlight for faster, more consistent charging. Protects batteries and equipment: multiple built-in protections prevent damage from overcharging, overheating, reverse polarity (PV) and low battery voltage so your system runs safely and reliably. Simple to install and monitor: wall-mountable, compact and light, with a clear LCD and remote configuration via iOS/Android for easy setup and real-time system monitoring. Key benefits (how it solves problems) Better battery life: three-stage charging and overcharge/overvoltage protection reduce battery wear and improve runtime. Safer operation: temperature-based fan control, temperature protection and PV/battery safeguards minimize failure risk and maintenance needs. Space- and noise-friendly: compact 21.5 x 11.5 x 5 cm footprint, 1.3 kg weight and acoustic noise below 40 dB make it suitable for indoor installation. Flexible system design: automatic 12V/24V/48V detection and compatibility with common lead-acid battery types simplify system planning. Main features 100% MPPT intelligent tracking for optimal solar power conversion Automatic battery voltage detection: 12V, 24V, 48V Three-stage charging (bulk, absorption, float) to optimize battery performance Multifunctional LCD for status, settings and real-time data Remote configuration and online real-time monitoring compatible with iOS and Android devices Output current limit protection, overcharge protection, over temperature protection PV reverse polarity protection (effective only when Voc < 100 V) Caution: controller may be damaged if PV open-circuit voltage (Voc) exceeds 180 V Battery low voltage protection and battery overcharge voltage protection Battery over charging power protection Physical and environmental specifications Housing and cooling: forced air cooling with internal fan; acoustic noise < 40 dB Components: industrial-grade Size: 21.5 x 11.5 x 5 cm Net weight: 1.3 kg Protection category: IP21 (indoor use) Operating temperature: -20°C to +55°C Storage temperature: -40°C to +75°C Environmental use: indoor only Certifications: EN 62109-1, EN 60730-1, EN IEC 61000-6-3, EN IEC 61000-6-1 Compatibility and installation notes Compatible battery types: lead-acid, ventilated (flooded) and gel batteries Automatic detection removes the need for manual battery-voltage selection Easy wall mounting; no additional device required to operate in parallel Note on parallel connection: No limited number of devices connected in parallel required Ensure PV array Voc remains within device limits (Voc < 180 V absolute; reverse polarity protection operates only if Voc < 100 V) Typical use scenarios 1) Off-grid cabin power: Charge a 12V/24V/48V house battery bank from a rooftop PV array while protecting batteries from overcharge and temperature stress and monitoring status from your phone. 2) Backup power for small commercial spaces: Keep lead-acid or gel battery banks healthy with efficient MPPT charging and real-time LCD/remote monitoring to ensure reliable power during outages. 3) Remote telecom or monitoring stations: Compact indoor mounting, low acoustic noise, industrial components and wide temperature tolerance make it suitable for enclosed equipment rooms where space and reliability matter. Technical warnings and best practices Do not exceed PV open-circuit voltage (Voc) of 180 V; Voc above 180 V can permanently damage the controller. PV reverse polarity protection works only when Voc is below 100 V; always confirm correct PV wiring before commissioning. Install indoors in a ventilated location to maintain operating temperature range and IP21 protection. Follow battery manufacturer guidelines when selecting charge parameters for specific battery chemistries. What you get A compact, industrial-grade MPPT charge controller with full protection suite, automatic voltage detection (12/24/48 V), multifunction LCD, remote monitoring and the certifications required for safe indoor installations.